v0.7.3

Trixi v0.7.3

Diff since v0.7.2

Merged pull requests:

• Add functionality for TimeSeries callback on UnstructuredMesh2D (#1855) (@andrewwinters5000)
• Set TreeMesh capacity attribute also when using MPI (#1862) (@bgeihe)
• Add warning about polynomial degree 0 (#1863) (@bgeihe)
• Update parallelization.md (#1864) (@bgeihe)
• Mention hyphen/dash caveat for boundary symbols (#1866) (@DanielDoehring)

Closed issues:

• What exactly is BoundaryConditionDirichlet? (#965)
• Add "zeroth" tutorial as an extended version of the README for the first steps with Trixi (#1292)
• trixi2vtk fails for TreeMesh results when running with MPI (#1861)